Weather is probably a major factor when you plan your trip to Lukla, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually July and August, with an average temperature of 8°C, while the coldest months are January and February, with an average of -5°C. The rainiest months in Lukla are July, August, June and September, with each month seeing an average of 510 mm of rainfall.